ARTICLE FEED & ADDITIVE MAGAZINE August 2024 81 Ring Die Pellet Mill Innovation Following the flat die, California Pellet Mill introduced the ring die pellet mill which significantly improved the uniformity and durability of pellets. This advancement was a crucial step forward in enhancing the overall quality of feed pellets. Integrating Steam Conditioning with the CPM Master Pellet Mill The integration of steam conditioning with the CPM Master Pellet Mill was another significant development. The addition of steam made the feed mixture more pliable, enhancing pellet formation and durability. This technique also improved nutrient preservation and digestibility in the final product. PELLET QUALITY AND MEASUREMENT Durability and Hardness Pellet quality is primarily assessed based on durability and hardness. Durability indicates the pellet's ability to withstand handling and transportation without disintegration, while hardness measures its resistance to mechanical forces. These parameters are critical for ensuring that the feed remains intact and effective until consumption. Different Requirements for Different Feeds The nutritional and physical requirements of different animal species necessitate tailored pellet quality parameters. For example, broiler feed might require softer pellets compared to cattle feed, which demands harder pellets for optimal rumination. Therefore, understanding and meeting the specific needs of each type of feed is essential for effective pellet production. CORRELATION OF STEAM ADDITION, PELLETING CAPACITY, DIE SPECIFICATION, AND PELLET QUALITY Data and Analysis Graphs illustrating the correlation between steam addition, pelleting capacity, die specifications, and resulting pellet quality are instrumental in optimizing the pelleting process. This data helps identify the optimal conditions for producing high-quality pellets. BENEFITS OF NEW PRODUCT FORMULATIONS CPM Double Pelleting Innovation The double pelleting innovation by CPM was develGearbox Mixer Feeder Feed Chute Pellet Chamber Mill Base CALIFORNIA MASTER MODEL PELLET MILL Illustration: Master Pellet Mill in the 1950s Pellet quality Correlation roller slip and pellet quality Pelleting line no.1, Formulation 32350, Temperature 78°C Capacity (T/H) Pellet quality (% LIGNA) 95,0 94,0 93,0 92,0 91,0 90,0 89,0 Roll slip 12% 10% 8% 6% 4% 2% 0% Roll slip (%) 10 12 14 16 18 20 22 24 Pellet quality Temperature °C Pellet quality (% LIGNA) 95,0 94,0 93,0 92,0 91,0 90,0 89,0 Roll slip 12% 10% 8% 6% 4% 2% 0% Roll slip (%) Correlation temperature to roll slip and pellet quality Pelleting line no.1, Formulation 34210, Capacity 20 T/H 74 76 78 80 82 84 Illustration: Pellet quality studies at increasing capacities and conditioning temperatures
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